Hi there!
Thank you for this hint. It works and the conds and thens are properly
computed.
This solved problem number one, but the number two is still there.
If I feed the template with a list of values (that need further rules
to be applied) the compiler still complains because of the multi-
valued attribute:
[12:51:16] error(125): ResultGenerator.g:47:8: label conds type
mismatch with previous definition: token-list!=rule-list
[12:51:16] error(125): ResultGenerator.g:48:8: label thens type
mismatch with previous definition: token-list!=rule-list
I think this error message is related to the conds.st and then.st.
With single values this works, but it is not applicable to multi-
valued attributes.
I need to state something like
"for each value of value-list do
apply further rules and apply the according template
return these values to super-template as list of evaluated strings"
Any ideas?
On 30.04.2009, at 12:12, Michael wrote:
> Am Thursday 30 April 2009 11:25:28 schrieb Florian Barth:
>> Hi everyone!
>> I'm writing a language transformator based on AntLR and I'm running
>> into some problems:
>> In order to transform conditional statement my parser constructs the
>> following AST:
>
>
>> The first problem I'm running into is that '?' and '*' seem to be not
>> allowed in tree grammars
>
> I think you must write it with parens like: (^(NODE foo))*
> try this:
>
> cond : ^(IF
> ^(CONDITION conds+=condExpression)
> ^(THEN thens+=expression)
> (^(ELSEIF
> ^(conds+=CONDITION condExpression)
> ^(thens+=THEN expression)
> ))*
> (^(ELSE else=expression))?
> )
>
>
> Michael
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